Ingredient-scale.



No. 756,710. PATENTED APR. 5, 1904'. R. W. ROMIG.

INGRBDIENT SCALE. l

APPLICATION FILED NOV.'18, 1903.

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UNITED STATES Patented April 5, 1904.

PATENT OFFICE.

ROBERT `W. ROMIG, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE E. & T.FAIRBANKS & COMPANY, OF ST. JOHNSBURY, VERMONT, A

CORPORATION OF VERMONT.`

lNGREDlENT-SCALE.

SPECIFICATION forming part of Letters Patent No. 756,710, dated April 5,1904.

Application filed November 18, 1903. Serial No. 181,712. (No model.)

To all whom, it may concern.-

Be it known that I, ROBERT W. ROMIG, a citizen of the United States,residing at Pittsburg, in the county of Allegheny, State of Pennsyl-Vania, have invented certain new and useful Improvements inIngredient-Scales, of which the following is a description, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon.

IO The 'present invention relates to an improvement in scales adaptedespecially to weigh set proportions of different ingredients enteringinto the composition of any mixture or manufactured product, such scalesbeing I5 of most common use in weighing the charges supplied toblast-furnaces.

A well-known Fairbanks type of ingredient-scale is shown and describedin the patent issued W. J. Miller, August 16, 1881, No.

2O 245,853, and the present invention is designed as an improvement onthe structure of scale set forth in said patent, the special advantagesthereover arising from greater simplicity of construction, fewer parts,and consequent less liability of disarrangement. Reference may be had tosaid patent for general features of construction of a scale of thischaracter.

The invention consists in the various matters hereinafter described, andreferred to in the appended claims.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a front elevation of the scalebeam boX open to show thebeams and the various features of my invention, in this figure aningredient-beam being shown as in position for use. Fig. 2 is a similarview showing the ingredient-beam removed from operative position. Fig. 3is an end view, partly in section, of Fig. 1; and Fig. I is a detailelevation of one of theingredient-beams.

In the drawings, O represents the base of the beam-box, and M the endsthereof. On the base are supported standards L, in vwhich the main beamis pivoted, this beam having the side bars J, having knife-edgepivot-supports on the standards and having the crossbars H H. From theshort arm of the main beam depends a loop K, connected with the upperend of the steelyard-rod Z. These parts are constructed, it will beseen, not materially different from the corresponding parts of the scaleillustrated in the aforesaid patent, except that in the present devicethe crossbar I-I on the short arm of the beam is moved nearer to thelever-fulcrum. In the aforesaid patent the ingredient-beams herein shownat A, with poises B, were bodily raised from the main beam by means offorked sliding bars at each end of the beam-box, moving in verticalguides and connected by horizontal toggle-levers. By my presentinvention I am enabled to dispense with the toggle-levers and theirsupports and to omit the vertical liftingbars from the short-arm endofthe beam.

As shown, each ingredient beam A has three notches I I' I" upon itsunder surface, the notches I I/ being adapted to rest on the knife-edgetops of cross-bars H H', respectively, when the beam is in position foruse. The notch I is arranged when the beam is in use to be'out ofengagement with the knifeedge top of a cross-bar H, attached to theinner side of the beam-box adjacent the end of the short arm of the mainlever; but when the beam A is raised off the cross-bars by tilting itsfront end the notch I will rest on the cross-bar H, and the ingredientpractically be pivoted therein. It will be noticed that the tops of thecross-bars H H and the apeXes 8O of the notches I Il are practicallyrespectively in the same horizontal plane, while the top of cross-barI-I" and apeX of notch I are not in the same plane with the othercross-bars and notches. It is only necessary that the notch 35 Il andcross-bar H" should be so related to each other and to the othercross-bars and notches that when the ingredient-beam is in use thecross-bar H exerts no supporting effect on the beam A; but when the beamis raised from the main-beam cross-bars it will be, in effect, pivotallysupported on the crossbar H or on a stationary part` of themachine-framework.

Attached to the inner side of the beam-box end adjacent to the end ofthe long arm of the main beam are vertical lifting-bars C.' rIhere isone such bar for each ingredientbeam, the top of each bar being locatedunderneath its corresponding beam. Each liftingbar C has avertical slotg, through which pass pins E, attached to lugs /t on the front endsupport M. By this arrangement correct Vertical guidance is given eachlifting-bar C. Each bar C has a lifting-handle or thumbpiece Eextending' out through the end of the beam-box, and has also anextending lug D adapted to be engaged by a pivoted catch G when the baris raised to the full height. Ton.

place a beam out of commission, therefore, the lifting-bar C is raisedby means of the thumb-piece E until the projecting arm D is engaged bythe latch Gr. The ingredient-beam is then in the position indicated byFig'. 2, one end being' supported by the lifting-bar C, the other endresting on the l nife-edge of the bar H, With notches I I raised clearoi' the crossbar H H Various minor modifications and changes may bemadeWithout departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. 1n a Weighing-scale, a suitable framework a main beam, andsupplemental beams adapted when in use to be supported on the main beam,means for raising each supplemental beam from the main beam, andtransferring' its support at the rear to a stationary part of themachine-frame; substantially as described.

2. In a Weighing-scale, a suitable frame- Work a main beam havingsupports thereon, ingredient-beams engaging said supports, asupplemental stationary support on 4the framework, arranged beneath acooperating portion of the ingredient-beams, said supplemental supportand cooperating portion being arranged to engage, when theingredient-beam is elevated from the main beam; substantially asdescribed.

3. The ingredient-beam having' the notches, the main beam having'cross-bars engaging certain of said. notches, and a third stationary vcross-bar arranged in a plane below the plane 0i the other cross-bars,and beneath the notch on the rear of the ingredient-beam; substantiallyas described.

4. In a scale of the character described, the vertical bars C, havingthe slots, guiding-pins extending through said slots, thumb-pieces onsaid bars, extensions D, and pivoted catches adapted to engage theextensions I); suliistantially as described.

5. In a weighing-scale ot' the character de scribed the main beam andthe ingredientbeams havin g coperatin g k nite-edge supports andnotches, a stationary support in a plane below7 the plane oi' thesupports on the main beam, each ingredient-beam on its rear edge beingnotched to engage said support, when lifted from its supports on themain beam; substantially as described.

In testimony whereof I aiiix my signature in presence et' two witnesses.

- ROBERT W. ROMIG. Vitnesses:

J. H. CONWAY, JAMES T. CLARKE.

